A 8 inch Swing Check Valve is a type of valve that is commonly used to prevent back flow of fluid in pipes. It is composed of valve body, valve, spring, bearing and gasket. When the fluid flow direction is normal, the valve is opened and the fluid can pass freely; when the fluid flows in the reverse direction, the valve will be closed by the fluid to prevent the fluid from flowing into the pipeline in reverse. Swing Check Valve is widely used in water supply, drainage, petroleum, chemical industry, thermal power generation and other fields, and is suitable for various media including water, oil, steam, etc. It has great application prospects in industrial production and life. The 8 flanged swing check valve has the advantages of simple structure, high reliability, convenient operation and maintenance, and long service life.